theres also the expression editor wich you could make your own IK/FK swich with something like:

(create attribute called IK/FK switch
, choose Integr as type
in expression editor now add this line -->

if IK/FK swtich = 1 "nameofIKhandle".IkBlend = 1
if IK/FK swtich = 0 "nameofIKhandle".IkBlend = 0


no quotations

now wherever you add that attribute you can control you IK/FK, its kayable also, and saves you trouble


OR

try making those things a group under the main hierarchy, or a double group to be sure